Chilling device



April 9, 1935. H. E. VON SEGGERN EI'AL 1,996,777

CHILLING DEVICE Filed June 29, 1932 3nnentor5 firmer f." l/o/v SEGGEEAZE/rfirA. Val 52665641 Patented Apr.9,1935 v T 139 777:

a a :11,996,777 I a CHILLING DEVICE Henry E. von Seg'gern and Ernest A.von Seggern, Es'condido, Califl i j Application 'June 29; 1932, SerialNo. 619,896

7 18 Claims. (01.62-,-126) Our invention relates to chilling devices,and 2 is an end elevational view of the trough memthe objects of ourinvention are: r V her from which'the substance to be chilled is First,to provide a device of this class] which poured; Fig.3 is an enlargedsectional View of our is particularly suited for cooling liquids, suchas; novel chillingunit taken through 3'3 of Fig. 1; 5 milk, which may bepoured thereover; 7 Fig.4 isan enlarged sectional View of the sep'ara 5"V Second, to provide a chilling devicein which. tor'used inconjunctionwith our chilling unit, the surfaces thereof may be made smooth and, andFig. 5 is an enlarged fragmentary, sectional V flat so as to be readilycleaned, thereby providview through 0f Fig. 1 showin the er ing a devicewhich may be easily maintained in of arra the tubes Containing the e a10:2 sanitary and sterile condition; p similar'characters of referencerefer to similar Third, to provide a device of this class, which pa t aportions heu e Seve al V WS is particularly efficient by reason'of amplecon-- of the drawing. j tact of the cooling medium and the substance: toBracket support 1,-water outlet tube 2, water: be cooled with the innerand outer surfaces of inlet tube 3, en member M e Plates afi et thedevice; V l 1 members'fi, distributing trough1,refrigerant dis- Fourth,toprovideadevice of this class inwhich Qharge p p 8, o -P inlet thecooling medium may be readily, quickly and pipe. '0, evaporatortCovering J2, colcompletely drained from the chilling device so as lectortrough 13, separate! Casing ba e to permit sterilization; 'valve l6float l1, drain plate I8, gas outlet tube Fifth, to provide a deviceof'this class which 9, oil co t pa 0, a d equalizer p pe incorporates apreliminary cooling means and. a constitute the Principal Parts andPortions Of 0 1 final cooling means or chilling means, the first 1 v lChilling deViCei a i of which may use water as acooling medium, a Theherein described Chilling device D while the second utilizesarefrigerant sothat the eu a y ad pt d for use in conj n i n with 25substance to be cooled may be progressively re- Ou eepending appentitled COO-ling al duced in temperature as it flows over the chillparatus, Serial No. 619,8 fi in e U ted ing it; a p States Patent OfiiceJune 29, 1932. Y 1 Sixth,to provide a device of this class'in which. Abracket upport I is provided which i a p the gas evolved from therefrigerant is'permit to be secured to a vertical surface. Near its up3o ted to flow upwardly and collect yet causing only per extremity thebracket support I supports a a minimumemount of disturbanceto'the'liquid, water outlet tube 2 which extends laterally ther'es thatthe gas maybe collected in a relatively from. Directly below the wateroutlet tube the dry state without the use of extra equipment for abracket I supp e w r inlet 3 Which extends this purpose; f Y in paralleldisposedrelation with the water out- Seventh, to provide a'chillingdevice which in-' let, tube. These two members are connected at 5Vcorporates a novel means of circulating the retheir extremities to averticallyarranged end irigerant therethrough and of separating thevamember or connecting member 4. The two tubes rious components of therefrigerant for re-cir- 2 and 3 are joined at their adjacent sides toverculation, and a tically disposed side plates Swhich are arrangeda 40Eighth, to provide onthe whole a novelly com in parallel disposedrelation with each other structed chilling unit which is durableefficient and separated a distance considerably lessjthan in its actionand which will not readily deterio the diameters of the inlet and.outlet tubes thererate or get out of order. 7 a i by forming avertically arranged flat panel with With these and other objects in viewaswill upp an lower rims formed-why t e tubes 2 and v appearhereinafter, our invention consists of cer- 3, an extended rim formed bythe end member 4,

tain novel features ofconstruction, combination and a supported-rimformed by the bracket l. and arrangement of parts and portions as will-The tubes Zand 3 areprovided with openings 2m be hereinafter describedin detail and particuand 3a, respectively, which communicatewith thelarly set forth in the appended claims, reference chamber, designated A,formed by the side plates 5 being had to the accompanying drawingandjto. 5'. Within the chamber there is provided a series x thecharacters of reference thereon which form of. baffle stripsB extendingbetween the side mema part of this application, in which: bers so as tocause water to flow back and forth in a Figure l is a side elevationalview-of our chill-.- order to progress from the lower inlet tube to ingdevice with parts and portions broken away the upper water outlet tube,as shown by the and in section to facilitate the illustration; arrows inFig. 1. I

. A distributing trough I is mounted above the Water outlet tube; Thistrough is-substantially semi-cylindrical in cross section and isprovided with a series of holes Iaalong its bottom directly over thewater outlet tube 2. The ends of the trough are closed and provided withprojections "lb arranged in pairs so as to straddle lugs la and 4aextending upwardly from the bracket support I and the end member 4'. j Y

Immediately below: the water inlet pipe 31andprojecting laterally fromthe bracket" I; is a repip 3'ar p f a ly-p tionedin nc semen with each.other and theiifhorizo'ntal sides; are bridged by cover plates 9, asshown best in Fig."

3, so aste'provide fiat'verticallsurfacesbetween the two pipes.

At the lower end of the bracket there isp'rovidedaza horizontally;extending refrigerant inlet piper] fl whichis disposeddirectly belowthepipesj 2;-'3:-andv8; in parallel relation therewith. Like- 30 :j tor;tubes! I are..joined to, the refrigerant inlet ll'l'ie refrigerant inletpipe -I Brests in a substanwise. the refrigerant inlet, pipe: l l:is.joined to the end member 4. The space: between, the refriger-; ant inletand discharge pipes is filled with a plu-; rality' of verticallydisposedevaporatori tubes :1 l

which are rectangular in .crosssection-so when positioned against eachvother, formsubstantially smooth outer surfaces. The. endsof theevaporaand discharge pipes so as to provide a plurality of independentfiuidlconductors' between these two members .The evaporator -tubes areprovided with covering 12 on their exposed surfaces which providesasmooth, easily cleanedsurface: The; evaporator. tubes are therefore ineffect a pair of: parallel disposed walls, such as the Walls 5,connectedbyvertical partitions at closely spaced in- I i Y I through theliquid refrigerant, passes through tervals.

tially semi-cylindrical oollecton tr'ough l 3 which is closed at itsendadjacent the bracket I" and is provided with a spout l3a -at itsextended end, as shown in Fig. 1.

Well as the tubes II and collectortrough 13 are rounded or made assmoothaspossible so asto eliminate all corners or' crevices where} bacteriamight lodge and to otherwise provide a'surfacewhich may be readily andquickly cleaned and sterilized.

55.:.-' 1 7 end" is separated'from-thesremaining portion ofTherefrigerant discharge pipe projects through the bracket l and intothe-lower portion of a separator casing l4 nearone end thereof. Thisthecasing by a bafilev 15 which provides an opening I50; at the upperportion of the casing and an 7 opening IBb'at the 10WI '1JOItiOI1 ofthecasing.

the lower edge ofthe opening Ilia is joined to a drain plate I8 which isdisposedat a slight angle and slopes towards the extended endof thecasing M. ::The drain is oonnectedalong its side margins to the casingsothat liquid mustfiow down to the lowerv end of the. drainplate. 'At

' this end the drain plate is' provided with a'low wall. I86; andarudimentary spout 1822. Liquid down turned end I9afof a gas outlet.tube. lfi proi- I The connections between the} several-pipes- 2-,:3,"8=and i8, and the'platesfi as with the gas.

jectinginto the casing l4 from'the extended end thereof.

" The refrigerant outlet pipe 8 is provided with a partition 8a at itsend projecting into the easing [4, said partition covers the upper halfof the refrigerant discharge pipe so as to form a gas collecting chamberdisposed above the evaporator tubes ll.

An equalizer pipe 2 I communicates with the bottom of the separatorcasingbetween the. bafile l and the :end of the casing provided with therefrigerant discharge pipe 8. The equalizer pipe 7 extends downwardlyand joins the refrigerant in- *let;pipe l0 and continues to a storagechamber S, shown fr s en r y in i thereof onto thefside plates, 5;between which cooling water is circulated. The milk intheform.

of two sheets-one oneach side of the chilling device thenifiows over theWater inlet pipe 3,.

erant discharge pipe and flows out underneath the partition 8a,whereupon the gas bubbles-up the, openingJEa, flows. over the drainplate l8, and isdrawn into the'gas outlet-tube l9.which is connected tothe. intake side of a compressor,

notshown. It is'customary, in some types. of.

compressors, such as sulphur dioxide compressors,

tof'provide. a quantity of oil or otherlubricant inv the refrigerant.=This oil collects on topof the liquid refrigerant betweenthe baflle; I5and the end of the casing having'thel refrigerant discharge pipe. 8.Thebubblesof gas which pass up. through the liquid refrigerantbecomeooatedwith oil: as they pass through-the oil film on top and carrythe 'oil;.over the.baffle,l,5;on to the drain plate I8, whereupon theoil is deposited on the drain'plateiand flows into theoil. collectingpan 28. The oil: accumulateshere until. the gas outlet tube l9 isvnearly submerged therein, where,-

upon' the-.Ioil is. drawn into the gas.- outlet tube- This arrangementensures circulation of the lubricant; with. the gas but rendersiti-practieally. impossible for liquid refrigerant to free to fiow.through the refrigerant outlet pipe without undueagitation-of the liquidrefrigerant,". whereby the gas maintains al relatively; dry.

condition. Inasmuchas thefloat valve. in the separator casing tendstojmaintain the refrigere ant liquid level above. the refrigerantdischarge pipe} 8, the. evaporatortubesiare normally full of: liquid;refrigerant"; Withithe evaporator tubes:

filled with'liquid refrigerant-the' capacity ofa compressor to removeheat from the evaporator tubes is practically directly proportional tothe absolute suction pressure produced byithe conipressor,thusprovidinga particularly eflicient evaporator construction, Though wehave shown and described .a particular.1construction, combination andarrangement of parts'and portions, wet-do not wishwto belimited to thisparticular construction, com,- bination and arrangement, butdesiretoinclude in the scope of our invention the construction,

combination and arrangementsubstantially set forth inthe appendedclaims. g i

Having thus described our invention, what-we claim as new and desire tosecure by. Letters-Patent is: f

1. In a chilling device, a hollow fiatsurfaced vertically disposedpanel, a liquid-refrigerant supply tube traversing the lower endthereof,'a re-' frigerant discharge tube traversing the upper endthereof, a plurality, of vertically disposedpartitions arranged inspaced parallel disposed relation across and within said panel,saidpartitions forming, evaporating spaces therebetween communicatingwith said supply tube and said outlet tube, whereby the gaseousparticlesof evaporated refrigerant are free to rise directly intosaidoutlet tube, and a second hollow flat surfaced verti-j callydisposed panel arranged directly above and joined at its lower margin tosaid first panel, a

circulating means formed within said-panel between the central portionand upper end thereof, and a refrigerant circulating means formed withinsaid panel between said central portion and the lower end thereof. r a

' 3. In a chilling device, a smooth flat surfaced hollow verticallydisposed panel; enlargements protruding laterally from the surfaces ofsaid panel but merging therein, said enlargements disposed at the upperand lower ends of said panel and across the central portion thereof, awater circulating means formed within said panel between the centralportion and upper end thereof, a refrigerant circulating means formedwithin said panel between said central portion and the lower endthereof, said refrigerant circulating means comprising an inlet pipeincorporated in,

the lower enlargement, anoutlet pipe incorporated in the centralenlargement, and vertically disposed evaporator tubes formingapluralityof independent conduits between said inlet and outletpipes.- y 1 4. In achilling device, apair of thin hollow vertically disposed panelsonearrangeddirectly below the other and forming anrupper and'a lowerpanel, transversely extending enlargements at the adjacent ends andremotei ends of said panels,. saidenlargements merging into the surfacesof said panels,a water circulating means associated with the upperpanel, said'lower panel comprising a pluralityof vertically'disposedrectangular evaporator tubes securediltogether side by side'so thattheir exposed sidesfo'rmthe sur i faces of said lower paneL-and-an'inlet pipe'and 7 an outlet pipe common. to said "tubes 'andincor-Lporated in the enlargements borderingsaid lower panel. a i

5.-In az'chilling device, a smooth flat surfaced circulatingmeans formedwithin said panel'be- I tween the' central portion and upper endthereof, a: refrigerant circulating means iformed within said panelbetween'said central 'portion and the lowerend thereof, means fordistributing a, liquid along the upper enlargement-whereby the liquidiscaused to flow inrsheets'orlfilmsiover'the surfaces of 'saidpanel',and means for collecting said liquid at the bottomofj said panel s a 6.lnz'a chillingdeyice, a smoothiflat surfaced hollow vertically disposedpanel,- enlargements protruding, laterally from the 7 surfaces ofsaid,

panel but merging therein, said enlargements disposed'at the upper'andlowereends of saidpanel and across the "centralportion thereof; awater circulating means'formed within said panel a betweensthe centralportion and upper endthereof, a refrigerant circulating means formedwithin said panel between said central portion and-the lower endthereof, said; refrigerant circulating meanscomprising an inlet pipeincorporated in the lowerlenlargeme'nt, an outlet pipe-incorporated inthe central enlargement,everticallydis: posed evaporator .Itubes forminga plurality of independent conduits between said inlet andlouta letpipes, means for distributing a liquid along the upperenlargement'xlwhereby the liquid" is caused to flow in sheets or: filmsoverthe surfaces of said panehand meansfor collectingsaidliquid at thebottom of said panel 7. In a'chilling deviceyapairlofi tmdhbnbwvertically disposed panels one arranged directly below the otherandforrning an upper and;.a lower panel, transversely extendingenlargements at the adjacent'ends and remote ends tofxsaid panels, saidenlargements merging'int'o the surfaces of .said panels, awatercirculating :means associated with the upper panel, said lowerpanel comprising a plurality of vertically disposed rectangularevaporator tubes secured together side by side so that theirexposedsides'form: the sur- 1 I faces of said lower panel, an inlet pipe'andianx outletpipe commonto'said tubes and incorporated in the enlargementsbordering said lower panel, means for. distributing a liquid along theupper enlargement 'wlrie'reby the liquid is. caused toiflow in sheets orfilms over the surfaces of said panels, and means disposedat the loweredge of the bottom panel for collecting said liquid.

8JIn-a chilling device; a plurality. ofvertically disposed rectangular"evaporator tubes "secured together side byside: so thatitheir exposedsides form fiatparallel disposed surfaces, an inlet pipe separatorchamber connected with said" outlet,

and .means therein tendingyto maintain liquid refrigerant at levelsabove said outlet pipe where'- bysaid evaporator tubes'are normallycompletely filled and said outlet tube-is 'onlypartially filled withliquid refrigerant. 1 u; 1- 9; In a chilling device, a pair of 5 thinhollow tain liquid:refrigrantntdeveb. above :said zoutlet pipe whereby:said evaporator tubes; arein'ormally 20 completely'filled'withf'liquidt-refrigerant. l

-10. :I n a Ichillinga'device,ia;pluralityiof verticallydisposedsrectangular :evaporator rtiibes secured together sidekby sideso that their zexposed sides formjiflatiparallel disposed :su f aces,:an. inlet :pipe common :tothedower eridszof said :tuhes,;an,= cute letpipe common to :the :upper: endsio'f saidxtubes, said ioutlet'pipeiprovided 'gwith itsz: outlet :opening disposedldownvvardlyironiiits ;upper.:side:thereby forminga:gaseoussrefrigerantreceiviing chamber 7 above:saidl-evaporator tubes; V

zll; inn chillinga'device' amlura ft yri'ofzvertically Y .dlsposed'tevaporator eitubes, ram-lower:horizontal 'connecting pipecommontmtheldwer ends ;of said tubesQanIrupper horizontal aconnecting pipe.conimonfto'the upperzends of said-tubes, the upperconnecting,zpipeiincluding :ani'outleti aperture LdiSr posed iibelow its.upper-zsi'de; said spipe .;forming along :its upperaportion above:saidoutlet; aperture an :eva'porated tor agaseous refrigerantrreceiving 4o .chaniberQ a iijecept'aclefin communication :withla sourceof refrigerantfand connectedxrwit-hmoth said :upper connecting pipe:jandl said: lower connecting pipe said receptacleextending above theupper connecting pipe,-anda1neans :fcr Emaintain- 7 ing the liquid level:in saidreceptaclerabovethe .upper connecting pipe whereby :the:gaseous: refrigerantin said receiving chamber isrcaused "to passupwardly-through additional liquid irefrige Aera-nt."@-

:12; Ina-chillingzdevice, a pluralityzof yertically disposed evaporatortubes, aa lower :zhorizontal connecting apipeicommonxto the ilOWBI endsof .said tubes, tanupper --hor'izontal connecting pipe commonto-the'upperendstof said tubes,:the :upper "connecting pipe including:an outlet aperture :dis-

:posedgb'elow its upper sside, :said pipe :forming .alongQz-its Iupperaportion-gfabovesaid "outlet aperrture .an-evaporatedor;gaseousrefrigerant receiving chamber, anequalizer iconduitrconnected:to both theoupperiandclower rpipes, sazfloat chamber 7 atzetheupper-pend so'f J said: conduit :Land receiving sthe ou tlet end ofsai'diupper :pipe and meansiin the :fioat :chamberfor maintaining the.liquidre frigerant level :above: theaupper connecting gpipe whereby,thegaseous refrigerant in' the receiving .chamber. is 1 caused Jto. pass:upwardly rthroughaad ,ditional liquid refrigerant. upongenteringitheifloat vchamber. V

, 13. Inia chilling idevicesapluralitv of wertically L disposedtubes','-a lower horizontal-connecting pipe commonzto' theslower ends of saidtubes, arr-upper horizontal connecting :pipe a-oommon to the, rapperends of.esaidetubes,:the'upp ii connec-tinggpipe including an outletaperturerdisposedzbelow;itsiup- I afirigerantwntletitube maproximityf-to the ilubri- $5 per side, said pipe 'zformingralongritstzupper nor tion abovegsaidwoutletiaperture :i'an evaporated orgaseous :refrigerant :receivinguchamb er; :mherebyaflubricanticontamedi-inzthe refm'gerant tends to risexandifloatzonlthegsurfaceiof the liquid:definingitheireceivingfohamber,:meanszconnectedrwith r,

the outlet end of the uppenccnnectingpipearranged itozmaintaingiliqnidizrefrigerant above the levelssaidzupper :pipe whereby:the ::lubricant andzgaseous refrigeranirare caused :to. mix asirtheyissue from said supper :pipe :and v:pass iiupwardlyfrnmzthesliquidssurfaceiin saidizmeans in theiform ofibuhbles.

:14. ttn raechilllngidevice an e'vaporatormeans in communication :iwith:a "source .Jof :uqum re-' frigerant,esaidaevaporatormeans havingiavgase euseretrigerant arecewing schamber at lits :upper Ioutlet-whereby the :gaseous refrigerant "from .the

evaporator'means is caused; to :pass through additionaliliqui'drefrigerant. Y 1 V :15. ln a chilling device;employing1arefrigerantcontaining:a-lubricantgan evaporator means in communication with asource of liquid refrigerant, said evaporator means having. a gaseousrefrigerant-receiving chamber, at its upper side, and agaseous'refrigerant outlet itherefor below said upper sidefwhereby a lubricantcontained in the refrigerant tends to rise andiloat on the surface ofthe liquid refrigerantin said chamberand fflowzrwith-fithe gaseousrefrigerant through said outlet, a receptaclecommunicating with saidoutlet-to receive gaseous refrigerant therefrom, and means formaintaining a liquid refrigerant in said receptacle at a "level-above;said-outlet whereby the-lubricant issuing from-'theoutlet'tends tocollect on the surface of the liquid refrigerant and the gaseousrefr-igerant is caused to pass upwardly through the lubricant andcarrythe lubricant jtherewithfl 3 Q 'lfiilni-a-chilling device employinga refrigerant containing :alubricant; "an evaporator means incommunication with a source 0f *liquid refrigerant, saidevaporator meanshaving -a gaseous refrigerant receiving chamber at-' its upper side,

' and a gaseousrefrigerantroutlet therefor below said upper *side,*whereby a lubricant contained in= the refrigerant tends "to riseandfloat on the surface of the liquidrefrigerant said chamber and flowwith "the gaseous refrigerant through said:outlet,- a receptaclecommunicating with said outlet :to receive gaseous refrigeranttherefrom, em ansfor maintaining a-liqui'd refrigerant, in saidreceptacle -1at-a"level above said-outletwhereby *the fliibricantissuing "from 'the outlet tends to collect on the 'sur'face of'theliquid refrigerant a-nd the" gaseous refrigerant-is caused-to pass up- 7wardly through the lubricantandcarry the lubricant therewith, -;*and acollector means "for the gaseous refrigerant and lubricant carriedthereby. L17.-p=In a chilling apparatus employinga-refrigerantcontaining a lubricant, an evaporator means, a separator; chamber and afloat-chamber communicating-with the-upper side of the evapioratorVmeans, a liquid refrigerant in-let in'the float :chamber; arfloa't 1controlled I val-ve therefor, :said :char'nbrs'kbeingirelativ'ely'disposed so that the float .=:contro1led' walve maintainsthe liquid 'FIEVGI'S. in tbdthichanibers above' the evaporatormeans;aiubricant:collectlngimeans communicatwith:gsaidnseparatorrchamber, a gaseous recant collecting'means whereby lubricant may bedrawn with the gaseous refrigerant into said tube.

18. In a chilling apparatus employing a refrigerant containing alubricant, an evaporator means, a separator casing arranged opposite theupper portion of said evaporator means, a bafiie dividing said separatoreasing into a pair of chambers communicating at their upper and lowerportions, one of said chambers communieating with said evaporator means,a liquid refrigerant inlet in the other of said chambers, a

per portion of said other chamber and communi.

eating with said first chamber, and an evaporated or gaseous refrigerantoutlet tube extending in contiguous relation to said oilcollecting meansI 7 whereby oil may be drawn into saidtube with the gaseous refrigerant.a '7 HENRY E. VON SEGGERN.

ERNEST A. voN SEGGERN.

